20010200120100 has 216 divisors, whose sum is σ = 66455179408800. Its totient is φ = 5018775690240.

The previous prime is 20010200120093. The next prime is 20010200120191. The reversal of 20010200120100 is 102100201002.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 22248951 + ... + 23130849.

Almost surely, 2^{20010200120100} is an apocalyptic number.

20010200120100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20010200120100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (33227589704400).

20010200120100 is an abundant number, since it is smaller than the sum of its proper divisors (46444979288700).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20010200120100 is a wasteful number, since it uses less digits than its factorization.

20010200120100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 883419 (or 883409 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 9.

Adding to 20010200120100 its reverse (102100201002), we get a palindrome (20112300321102).

The spelling of 20010200120100 in words is "twenty trillion, ten billion, two hundred million, one hundred twenty thousand, one hundred".